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Patent US2499040A successfully refreshed from Google Patents.
US2499040A
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Pressure responsive switch
Assignee: Allied Control Co Inc
•
Filing: 1945-10-20
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Granted: 1950-02-28
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Expires: 1965-10-20
Abstract
No abstract record available.
Inventors
- 👤 Herbert D Steinback
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:52
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/32; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/2012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1653177A
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US2209721A
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US2216699A
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US2214556A
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US2302250A
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US2316009A
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US2355872A
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US2357878A
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US2429158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |